EP 1153959 A3 20041124 - Grain aggregate and producing method thereof, and light-diffusing agent
Title (en)
Grain aggregate and producing method thereof, and light-diffusing agent
Title (de)
Grain-Aggregat, Verfahren zu dessen Herstellung und lichtstreuendes Mittel
Title (fr)
Aggregat de grains son procedé de preparation et agent diffusant la lumière
Publication
Application
Priority
JP 2000140450 A 20000512
Abstract (en)
[origin: EP1153959A2] A grain aggregate is formed by bonding a plurality of cross-linking polymeric grains via a substance (binder) having a reactive functional group, and alternatively, the grain aggregate is formed by bonding at least two different types of a plurality of grains, thus providing the grain aggregate having the improved heat resistance, solvent resistance, strength and light-diffusing properties. Further, a light-diffusing agent made up of the grain aggregate has the improved light-diffusing properties. Therefore, when applying a light-diffusing mold article including the light-diffusing agent to, for example, a backlight of a liquid crystal display device, high brightness and a wide angle of visibility can be attained. Further, by spray drying of a dispersion liquid containing the grain aggregate, the grain aggregate can be produced with ease. <IMAGE>
IPC 1-7
IPC 8 full level
C08F 6/18 (2006.01); C08J 3/12 (2006.01); G02B 5/02 (2006.01)
CPC (source: EP KR US)
C08F 6/18 (2013.01 - EP US); C08J 3/12 (2013.01 - EP KR US); G02B 5/0226 (2013.01 - EP US); G02B 5/0268 (2013.01 - EP US); G02B 5/0278 (2013.01 - EP US); C08J 2333/12 (2013.01 - EP US); Y10T 428/254 (2015.01 - EP US); Y10T 428/2982 (2015.01 - EP US); Y10T 428/2991 (2015.01 - EP US); Y10T 428/2998 (2015.01 - EP US)
Citation (search report)
- [X] US 4042653 A 19770816 - BEYN EDGAR JOACHIM
- [X] US 4920090 A 19900424 - RITTER WOLFGANG [DE], et al
- [X] WO 9634062 A1 19961031 - GRACE GMBH [DE], et al
- [X] DATABASE WPI Section Ch Week 198310, Derwent World Patents Index; Class A21, AN 1983-24369K, XP002298120
- [A] PATENT ABSTRACTS OF JAPAN vol. 0140, no. 31 (P - 993) 22 January 1990 (1990-01-22)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1153959 A2 20011114; EP 1153959 A3 20041124; CN 1271123 C 20060823; CN 1323849 A 20011128; KR 100504601 B1 20050803; KR 20020002198 A 20020109; TW I287024 B 20070921; US 2001051268 A1 20011213; US 6610405 B2 20030826
DOCDB simple family (application)
EP 01401149 A 20010503; CN 01116064 A 20010514; KR 20010025923 A 20010511; TW 90111240 A 20010511; US 84736701 A 20010503